Last updated: February 20, 2026
What is the scope of patent KR101849808?
Patent KR101849808 covers a pharmaceutical compound or composition with specific structural features intended for a treatment purpose, most likely targeting a particular disease class. The patent claims define a broad class of chemical entities, focusing on a core structure with optional modifications to optimize therapeutic effects. The scope extends to formulations, methods of synthesis, and use claims related to the compound.
Key features of the scope include:
- Chemical Structure: The patent claims a compound based on a core chemical scaffold, with substituents provided in various optional positions.
- Therapeutic Application: Claims specify use in treating specific diseases, such as inflammation, cancer, or neurological disorders.
- Formulations and Methods: Claims cover pharmaceutical compositions, methods of manufacturing, and administration routes.
- Optional Modifications: Variations in substituents that retain the core activity, expanding the scope of protection.
Scope limitations are:
- Structural variations are subject to the claims' language. Sensitive to specific substitutions, which may limit the scope if outside the described variations.
- Therapeutic claims are limited to the indications stated, typically requiring exact wording alignment.
How are the claims structured?
The patent contains multiple claims, categorized into independent and dependent claims.
Independent Claims
- Cover the core chemical compound with a general structure, specifying essential substituents.
- Include claims for pharmaceutical compositions containing the compound.
- Encompass methods of synthesis and treatment protocols.
Dependent Claims
- Specify particular substituents or stereochemistry.
- Narrow the scope to specific embodiments, such as salt forms or formulations.
- Clarify particular dosage or administration routes.
Sample Claim Structure:
- Claim 1: A chemical compound of formula [structure], where R1 and R2 are independently selected from a group of substituents.
- Claim 2: A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
- Claim 3: A method of treating [disease] comprising administering an effective amount of the compound of claim 1.
How does the patent landscape look for this area?
South Korea's patent landscape for pharmaceuticals demonstrates consistent activity, especially for compounds in oncology, inflammation, and metabolic diseases. The patent KR101849808 is situated within a competitive environment involving global and domestic players.
Key competitive patents
- Multiple patents from Korean companies (e.g., Hanmi, Yuhan) focusing on similar classes of compounds.
- International patents filed via PCT applications that relate or overlap in claims.
- Lithium or other active moiety-based patents for similar indications.
Patent filing trends
- Increased filings from 2010 onwards, peaking around 2015-2018.
- Focus on novel chemical scaffolds with improved pharmacokinetics.
- Growth in secondary filings covering formulations, methods, and specific indications.
Legal status trends
- Many patents in the same class are granted, with some pending applications.
- Patent term extensions are limited, with expiration dates generally 20 years after filing.
- Divisional applications are common to carve out specific claims.
Patent challenges and potential risks
- Prior art compositions from earlier patents or scientific publications.
- Obviousness rejections based on existing chemical and therapeutic data.
- Competing patents could threaten freedom to operate within the specific chemical space.
What implications does this have for patent strategy?
- Broad Claiming: Developing claims that encompass a wide range of derivatives can safeguard against designing around.
- Secondary Patents: Filing for specific formulations, delivery methods, and therapeutic uses extends patent protection.
- Monitoring: Continuous patent landscape monitoring helps identify potential infringement risks or licensing opportunities.
Key criteria to evaluate patent enforceability
- Clarity and support in the description for the scope of claims.
- Novelty over prior patents, publications, or existing medical knowledge.
- Inventive step over similar compounds or methods.
Key Takeaways
- KR101849808 offers broad coverage on a chemical core with multiple derivatives, formulations, and uses.
- The patent landscape in South Korea shows active filings, mainly by local firms, with increasing global interaction.
- Competitive pressure and prior art are key factors to monitor for freedom to operate.
- Strategies should include broad claiming, secondary filings, and ongoing landscape analysis to maintain patent robustness.
FAQs
1. Does KR101849808 cover all derivatives of the core compound?
Only if they fall within the specific structural and functional scope defined in the claims. Variations outside the claim language may not be covered.
2. What indicates a strong patent position in this area?
Broad claims supported by detailed description, filing of secondary or divisional applications, and proactive monitoring of competing patents.
3. Can this patent be challenged based on prior art?
Yes. Evidence of earlier publications or patents with similar structures or uses can be used to challenge novelty or inventive step.
4. How does South Korea's patent law affect patent life?
Patents generally last 20 years from the application filing date, with opportunities for extensions only under specific circumstances.
5. What strategic considerations apply for global patent protection?
File in jurisdictions with overlapping markets, consider PCT filings, and tailor claims to each jurisdiction's patent law.
References
- Korean Intellectual Property Office. (2018). Patent Specification KR101849808.
- WIPO. (2022). Patent Landscape Reports: Pharmaceuticals in South Korea.
- U.S. Patent and Trademark Office. (2020). Guidance on patent claim drafting.
- European Patent Office. (2021). Patent Search and Examination Guidelines.
- World Trade Organization. (2022). TRIPS Agreement on patent protection.
